20814416

素因数分解:

$2^4\times 7^2\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:352

約数の個数: 60

約数和(自身を含む): 47496960

約数和(自身を除く): 26682544

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 139, 191, 196, 278, 382, 392, 556, 764, 784, 973, 1112, 1337, 1528, 1946, 2224, 2674, 3056, 3892, 5348, 6811, 7784, 9359, 10696, 13622, 15568, 18718, 21392, 26549, 27244, 37436, 53098, 54488, 74872, 106196, 108976, 149744, 185843, 212392, 371686, 424784, 743372, 1300901, 1486744, 2601802, 2973488, 5203604, 10407208, 20814416]

約数ペア:

[(1, 20814416), (2, 10407208), (4, 5203604), (7, 2973488), (8, 2601802), (14, 1486744), (16, 1300901), (28, 743372), (49, 424784), (56, 371686), (98, 212392), (112, 185843), (139, 149744), (191, 108976), (196, 106196), (278, 74872), (382, 54488), (392, 53098), (556, 37436), (764, 27244), (784, 26549), (973, 21392), (1112, 18718), (1337, 15568), (1528, 13622), (1946, 10696), (2224, 9359), (2674, 7784), (3056, 6811), (3892, 5348)]